Gage for skiving-machines.



mksvemzy PATENTBD JAN.14, 1908.

M. GAVANAGH.

GAGE FOR SKIVING MACHINES.

APPLICATION FILED AUG. 7, 1907.

MICHAEL GAVANAGH, OF NEW YORK, N. Y.

GAGE FOR SKIVING-MACHINES.

Specification of Letters Patent.

Patented Jan. 14, 1908.

Application filed August 7. 1907. Serial No. 387.398.

To all whom it may concern:

Be it known that I, MroininL CAVANAGH, a citizen of the United States,residing in New York, in the borougl'i of Brooklyn, county of Kings, andState of New York, have invented certain new and useful Improvements inGages for Skiving-Machines, of which the following is a specification.

This invention relates to gages for skiving machines, and moreparticularly to gages such as are used in connection with machines ofthis character in which a grooved feed-roll co-acts with a rotary tablein order to feed the counters to the cutting-knife.

In machines of this character as at present constructed there is usuallyemployed a gage to regulate the cutting action of the knife and suchgage is usually mounted upon a fixed part of the machine in such amanner as to slightly overlie the feed-table, which is mounted to rotatein a horizontal plane. The gage as usually constructed consists of ablock secured to said fixed part and extending parallel with the planeof rotation of the feed-roll and approximately tangential to thefeedtable in such a manner as to properly guide the counter between thefeed-roll and table.

It has been found in practice that by the contact of the counters withthe gage the latter is quickly worn away. In this manner the gagebecomes useless and has to be often entirely replaced.

The object of this invention is to avoid this defect and provide a gagewhich embodies an adjustable wearing surface, whereby the life of thegage is greatly increased.

l/Vith this end in view, the invention consists in a gage for thepurpose indicated, which comprises a wearing plate of extremely hardmetal which is clamped to the machine by a clamping block in such amanner as to be reversible, as will appear from the followingdescription and claims.

In the accompanying drawings, in which the same reference charactersdenote corresponding parts throughout, Figure 1 is a perspective view ofa skiving machine having a gage constructed in accordance with thisinvention applied thereto. Fig. 2 is an enlarged perspective view of thegage, and Fig. 3 is a vertical longitudinal section of the gage showingthe same clamped to the machine.

Referring to the drawings, the horizontal feed-table 5 of the machine issupported and rotatable in a standard 5 and cooperating with said tableis the grooved feed-roll 6. The cutting-knife 7 is located behind thefeed-roll, and to the fixed part 8 of the machine, at one side of thefeed-table, the gage is applied. All of these parts are of knownconstruction.

The invention consists in providing a gage which is made in two parts:an oblong wearresisting plate 9, and a clamping block 10. The plate 9forms the base of the gage and projects at either end beyond the block10. Said plate is preferably made of very hard steel, though any othervery hard wear-resisting metal might be used. The clamping block 10 maybe made of any suitable material, preferably inferior metal and of acheaper quality.-

The gage is applied to the fixed part 8 of I the machine in such amanner that one end of the wearing plate9 extends into cooperativerelation with the feed-roll. It is clamped in position by the block 10,which is superposed thereon. Screws 11 pass downwardly through saidblock and the wearing plate into the fixed part 8, as shown in Fig. 3.In this position of the wearing plate, its forward end will come incontact with therapidly rotated counters, which being simultaneouslycut, are swung with considerable force against the gage. This will causea wearing away of the plate at the end of one side.

Hitherto,.a new gage would soon be so worn away as to be absolutelyuseless, so that a continued cost in the operation of the machine wasoccasioned. In my improved gage, when one end of the plate becomes worn,the wearing plate is separated from the block 10 and reversedhorizontally, that is to say, so that the end which was directed awayfrom the table is now directed towards it. l/Vhen this end also becomesworn away, the wearing plate is again separated from the block 10 and isturned over, whereby new side-ends may be now subjected to the wearingaction. Thus it will be seen that four different parts of the wearingplate may be presented to the counters, whereby the life of the gage maybe correspondingly increased as compared to those in which noreplaceable wearing surface is provided. The adjustment of the wearingplate can always be readily efiected as it is only necessary to removethe screws 11 and then replace the same after the wearing plate has beenturned. When one of the wearing plates is worn out, it can be replacedat little expense by a new one Which is clamped in position by the samedevices, the block 10 being used throughout for the different plates.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A gage for skiving machines, comprising a rectangular Wearing plateof Wear-resisting material, and a superposed clamping block beyond Whichsaid plate extends at both ends and which is detachable in order topermit the reversal of said plate so that different sides thereof may bebrought into action.

